Originally Posted By: Spartuss
I've used the 3x drain and refill method in the past with this stuff. 30k miles later and freezing temperatures outside, the car takes a long time to up shift into over drive. Due to this symptom, I'm having doubts if the Amsoil stuff has any advantage over the genuine Toyota WS ATF.
that's weird, all our Honda ATs and Toyota ATs all shift considerably smoother on Amsoil, and on my Toyota's the power steering are also considerably smoother on Amsoil compared to MaxLife ATF and Castrol Import ATF.
but then again all our ATs are the inline 4 transmissions, not the V6 transmission your Avalon has.
from my experience on 9 of our cars: Amsoil ATF (not the ATL kind) > Castrol Import ATF > MaxLife ATF > Toyota Type IV > other dexron III ATFs. Obviously YMMV.